In addition to the injured individual, approximately 20 people were trapped on campus elevators because of the blast until responding fire crews freed them.

About ninety minutes after the explosion, an apparent ammonia leak in a classroom was also reported. Campus officials confirmed the leak was contained soon after, the AP reported.

In addition to the injury and damage it caused on campus, the explosion also apparently threw a monkey wrench into the study plans of many undergraduates, who were preparing for upcoming midterms in the coming days.

"I have midterms tomorrow as do a bunch of other students on campus," Kelsie Carlson, a freshman, told KTVU. "A lot of students don't have power to study or get their laptops on or anything like that."

Though it is believed to have been triggered by the copper wire theft from last week, authorities are reportedly still investigating the cause of the blast.

A massive explosion rocked UC Berkeley Monday night, injuring one person and triggering a campus wide evacuation. The explosion occurred in an underground utility vault and was preempted by a power outage earlier that morning.